Beyond Ukraine, Emirates recently stopped flying over parts of Syria as a civil war expanded. Some airlines have curtailed service in Iraq, where violence has escalated between the government and a jihadist militant group. The FAA has current warnings about flying over parts of Iran, Yemen, Egypt's Sinai peninsula, North Korea and other countries.
Last month, a gunman in Pakistan fired on a jetliner that was landing in Peshawar, part of the country's volatile northwest region, killing a passenger and wounding two other people. Emirates suspended flights to Peshawar, and other carriers canceled some flights while they reviewed airport security. Two weeks before that, gunmen attacked the country's busiest airport in Karachi.